// Generated from E:/ideaDownload/antlrg4Demo/src/main/java/com/yz/antlr/hello/g4\Hello.g4 by ANTLR 4.9.2
package com.yz.antlr.hello.g4;
import org.antlr.v4.runtime.tree.ParseTreeListener;

/**
 * This interface defines a complete listener for a parse tree produced by
 * {@link HelloParser}.
 */
public interface HelloListener extends ParseTreeListener {
	/**
	 * Enter a parse tree produced by {@link HelloParser#compilation_unit}.
	 * @param ctx the parse tree
	 */
	void enterCompilation_unit(HelloParser.Compilation_unitContext ctx);
	/**
	 * Exit a parse tree produced by {@link HelloParser#compilation_unit}.
	 * @param ctx the parse tree
	 */
	void exitCompilation_unit(HelloParser.Compilation_unitContext ctx);
	/**
	 * Enter a parse tree produced by {@link HelloParser#prog}.
	 * @param ctx the parse tree
	 */
	void enterProg(HelloParser.ProgContext ctx);
	/**
	 * Exit a parse tree produced by {@link HelloParser#prog}.
	 * @param ctx the parse tree
	 */
	void exitProg(HelloParser.ProgContext ctx);
	/**
	 * Enter a parse tree produced by {@link HelloParser#level_num}.
	 * @param ctx the parse tree
	 */
	void enterLevel_num(HelloParser.Level_numContext ctx);
	/**
	 * Exit a parse tree produced by {@link HelloParser#level_num}.
	 * @param ctx the parse tree
	 */
	void exitLevel_num(HelloParser.Level_numContext ctx);
}